The singers were performing their duet "Beautiful" for a sold-out crowd at the Credit Union Centre in Saskatoon when Bieber tripped while making his way down a set of stairs.
Bing: Bieber throws up onstage
Fans gasped in horror as the "Baby" hit-maker fell, and a loud thud could be heard throughout the arena as his microphone picked up the sound of his stumble.
Jepsen quickly offered her hand and helped him back to his feet as they finished their track.
The fall happens around the 1:59 mark below:
he's so stupied... our next tween disaster in the works .. wonder when he's going to head to rehab..
kid needs to get his life back his greed for fame is going to be an ugly fall.. take some time off JB go fishing maybe get a boyfriend and chill..